甘肃嘉峪关黑山湖一带金矿地质特征初步研究

甘肃嘉峪关黑山湖一带金矿点分布密集，品位较高。该区金矿赋存于奥陶系浅变质岩中，矿体受断裂控制，矿化类型有蚀变岩型和石英脉型。金矿化蚀变带规模较大，金矿体呈脉状和透镜状，多数为盲矿体；矿化蚀变带如同河流，矿体呈“鱼群”状。通过对该区金矿成矿地质特征、找矿标志和控矿因素等方面的总结，探索该区金矿找矿前景，提出勘查开发工作建议，旨在引导相关部门和科研机构对该区金矿的关注，推进该区金矿的找矿勘查与开发。

A Preliminary Research on Geological Characteristics of the Gold Ore Around Heishanhu Area in Jiayuguan of Gansu Province

Gold mineral occurrences are intensively distributed with high grade in the study area.Meanwhile, it is displayed that gold deposit occurs in the ordovician in the shallow metamorphic rock, and ore body is controlled by fracture,additionally,the mineralization types contain altered rock type and quartz vein type.The gold mineralization alters with larger scale,moreover,the gold ore bodies are vein and lenticular, and most of ore bodies belongs to blind ore body.Mineralized alteration zone is just like a river, and the ore body like the shape of fish school.Based on the gold metallogenic geological characteristics,prospecting marks and ore-controlling factors,we propose the exploration development suggestions in order to guide the relevant departments,to concern about the gold deposits in the study area and finally to promote the prospecting of gold exploration and development.